There's a tag team hare scramble in Casey this weekend and I believe it's the last one for the year. I think you can race it without a partner to get D-17 points, but it's suposed to be a three hour race.
Cahokia Creek (White City) has a team hare scramble on the schedule for November 30th. I think you can enter the Ironman class if you want to do it alone; not sure how long the race is.